SSC GD Constable 22 Nov 2021 Shift 2 Paper

There are 45 persons (only male and female) in a group. The ratio of the number of males and females is 5 : 4. If the average weight of males is 79.4 kg and that of females is 64.5 kg, then what will be the average weight (in kg) of all the individuals in the group (corrected to one decimal place)?